Professional-grade drafting protractor designed for precision measurement and accurate angle construction. Features a full 360° rotation with half-degree increments for detailed technical drawings and mathematical work. Crafted from durable, transparent moulded plastic for clarity and longevity. The open-centre design provides comfortable grip and unobstructed sightlines for marking angles. 100mm diameter makes it ideal for classroom, studio, and professional use. Essential tool for architecture, engineering, technical drawing, and geometry instruction.